61. Bessel's Correction and Unbiased Variance
easy
The sample variance is commonly computed as s² = Σ(xᵢ - x̄)² / (n-1) rather than dividing by n. Why is n-1 used?
The sample variance is commonly computed as s² = Σ(xᵢ - x̄)² / (n-1) rather than dividing by n. Why is n-1 used?